Dump-car.



S. OTIS.

DUMP CAR.

APPLICATION FILED SEPT. 19r 1904.

1,033, 342. Patented July 23, 1912.

3 SHEETS-SHEET ly S. OTIS.

DUMP CAR. APPLICATION FILED SBPT.19,1904.

1,033,342. Patented July 23, 1912.

3 SHEETS-SHEET 2V 3% @MJ f gw,

S. OTIS.

DUMP GAR.

Patented July 23, 1912.

APPLIUATION FILED SEPT.19,

3 SHBETS4SHBET 3.

UNTTED STATES PATENT OFFICE.

SPENCER OY'IIS, OF CHICAGO, ILLINOIS.

DUMP-CAR.

Specification of Letters Patent.

Patented July 23, 1912.

Application filed September 19, 1904. Serial No. 225,028.

l provenients in Dump-Cars, of which the following is a specification.

My invention relates to that class of dump cars having dumping doors movable 1nto closed position to formA portions of the car bottom and into open position to dump the load.

It relates particularly to the means for operating the ldumping doors.

The principal object of my invention is to provide a simple, economical and eliicient dump car.

A. further object ofthe invention is to provide suitable and eflicient means for operating the dumping doors.

A further object is to provide suitable means for supporting and operating theA dumping doors comprising main operating shaft and crank mechanism and suitable leve-r mechanism whereby the rotation of the main operatingshaft and crank mechanism will cause a relatively greater movement of the lever mechanism and door at the points where such door and lever mechanism are connected. It is also desirable to provide means whereby the lever mechanism is adapted to lock the door in closed position and efficiently support it with the load thereon and to release the door to permit it to swing open when such lever mechanism is moved to releasing position by means of the main operating shaft and its crank mechanism.

A further object of the invention is to provide suitable gear mechanism for 0perating the main operating Shafts and therebycthe connecting lever mechanisms and dumping doors, and to enable such gear mechanism to be thrown'out of operative engagementl with the main operating shafts and dumping doors, so as to permit the dumping doors to swing to open position and the shaft mechanisms to rotate in the releasing direction independently of the gear mechanism.

A further object is to provide suitable means for operating the gear mechanism, comprising a lever for use .when such power is required, and intermediate mechanism such as a hand-wheel-for operating the gear mechanism more rapidly Whetn less power is required.

Other and further objects of the invention will appear from anl examination of the drawings and the following description and claims.

The invention consists in the features, combinations and details of construction hereinafter described and claimed.

In the accompanying drawings-Figure 1 is a sectional view in elevation of one side of the end of a car provided with my improvements, showing the dumping door closed and the door operating mechanism supporting the door in such position; Fig. 2 an upright View of the gear mechanism for operating the-main operating shaft, showing the hand-wheel and worm mechanism for operating such gear and thereby the main operating shafts and dumping doors; Fig. 3 a sectional View in elevation showing a portion of the end ot' the car with the dumping door and its supporting and operating lever mechanism in open position; Fig. 4 a

detail viewlin elevation showing the gear mechanism in position to release the door and permit it to swing open and showing the stud upon themain operating shaft in full lines atA the point where the door is released and in dotted lines at the' point which such stud reaches when the door has swung to open position, as shown in Fig. 3;

Fig 5 an enlarged sectional detail of the worm gear wheel showing it mounted rotatably upon the main operating shaft with the stud bearing collar in fixed relation to such shaft and extending into the recess in such gear wheel; Fig. 6 a sectional view in elevation of a portion of the end of the car showing the operating lever for operating the hand-wheel and thereby the gear Wheel, main operating shaft and dumping shaft and the dumping doors connected therewith, such main operating lever being shown in extended position in full lines and in folded positionin dotted lines; Fig. 7 a detail plan View showing the hand-wheel and the main operating lever in extended position; Fig. 8 a. detail showing the operating lever in position to grip the hand-wheel; and Fig. 9 a plan View in detail of the operating lever in folded 4moved.

In constructing a dump car and providing mechanism for operating the dumping 5 floors made in accordance with my improvements, I provide a car frame having longitudinal center sills a,'f longitudinal sills" b beside such center sills, transverse beams c supported by such longitudinal sills extending transversely across the car at suitable intervals and having a central'car bottom portion (l mounted thereon, end frames e and'side frames f, all of whichiniay be,of

any ordinary and well-known type. The t5 transverse beams, however, should havesiide port-ions provided with a space therebetween for receiving the metallic loops as hereinafter described.

Dumping doors r/ extend longitudinally of the car between the transverse beams and are pivotally mounted upon main operating shafts z, so as to swing upward to closed position between the transverse beams and in contact with flanges z', which project outwardly beyond the sides of the transverse beams. These dumping doors are provided with hinges y' by means of which they are pivotally connected with the main supporting and operating shafts L already described. The main operating shafts are rotatable independently of the doors mounted thcret'in and extend preferably the entire length of the car, so that each supports one side of all the doors on its side of thcvcar, and serves to operate such doors by means of .the mechanisms hereinafter described. there is, of course, a main operating shaft Jfor nach side of the car and the entire mechant-:ins for operating the doors on one side of the car are identical with those for operating those on the opposite side. It is, therefore, deemed to be necessary to describe only one set-of such mechanlsms and in connection with one or more doors on one side of the ear in order to enable the invention to be understood by those skilled in the art.

The. transverse beams f; comprise two Side members provided with a space therebetween, and between the side members of each transverse beam is mounted a rigid loop L' formed of metal which is riveted between thc side portions of the' transverse beam. Plates Z are mounted on the outposition, the hand-wheel being reboth the transverse beams and straps, such plates being provided with a recess nt 'for receiving` a shaft n which extends beneath all of the doors on one side of the car and is movable backward and forward or rcriprocatinglv inside of the loops through which it extends. Each oil these loops: is

provided with an inclined portion o which l extends upwardl)y and outwardly atan in- Cline from the lower portion ot' tluloop to a side of these loops or straps and riveted to t point /the supporting upper fac'e of the loop being substantially horizontal from such point outward to the extreme limit of the loop---as shown in Fi g. 3. I A plurality of collars f/ are mounted upon each of the main operating shafts in fixed relation thereto and each provided with a stud or crank arm r, and lever arms s are pivotally connected at one end to such crank arms by means of clips t and pins u and at the other end toone of the shafts n already described. These levers a and loops k are arranged at suitable intervals throughout the entire length of the dumping doors, and are all alike. .i

A plurality of levers or depending Supporting arms o are pivotally mounted upon the doors near the outer swinging edges thereof by means of suitable pivots w and are provided at or near their swinging ends with ahook or loop portion g/ which forms the base upon which they rest. A projecting guard portion .a extends beyond such hook, loop or base portion so as to be at all times above the shaft nand serve as a. guide to cause the arm and shaitt to be properly connected in operation. rlhe hook or loop portions of the levers engage the shaft nI which it is shown in 'full lines in F ig. 3 to the point where it is shown in dotted lines in said figure, such point being indicated by the intersection of the dotted line `f2 with the upper edge of the inclined loop c. A further movement raises the door upon the arm which is moved to upright position beneath it. v

By this arrangement it will be readily seen that the rotation of the main operating shaft with its crank-mechanism from the position shown in Fig. l tothe position shown in Fig. will release the door and permit it. to swing open. '.l'he door being in open position as shown in ment of the main olierating shaft with its crank mechanism in the direction necesi-.ary to close thel door will cause the shaft 'n to passupward aloner the inclined p'ortion ot' the loops, raising the door aud con'iiinfl in Contact with the hook or base portion of the leversl 'v when such shaft reaches tht` boint shown in dotted lilies in l. The continuation of the rotation of the main swing the levers o upon their pivots until said shaft reaches the top of theinclined portion of the loops and until the levers/v ha vo at that point reached almost a vertical position. .\t'ter thelshaft, upon .which the arms Iv rest, has reached the top of the innient will throw the levers e to a substantially vertical position as shown in Fig. 1 so as to Asupport the doors firmly in closed l position. 'When the parts are in this posiwhen such shaft is moved from the pgint'at4 Fig. fl theY moveoperatingr shait will cause theshaft n tol clined portion of the loops a further inovc- A tion the shaft n rests upon the horizontal portion of the loops. In order to release it and thereby the supporting levers v and the dumping' doors so as to permit such doors to swing open, it is only necessary to swing this reciprocating shaft n toward the center of the car past the horizontal portion of the loops and on to the inclined portions thereof, from which point the weight of the load upon the door will cause it to swing to open position.

In order to provide suitable means for rotating the main operating shafts so as to operate the lever mechanisms above described and thereby the dumping doors, and to enable the main operating shafts to be released so as to swingr freely with the doors independently of the mechanism for operating such main operating shafts, I provide each main operating shaft with a suitable gear preferably comprisingr a worm wheel 3 mounted loosely upon such main shaft so as to rotate independently thereof. This wheel is held in position by means of a collar 4, secured to thc shaft on one side of such worm wheel or gear` and by means of a collar 5 rigidly secured to such main operating shaft upon the opposite side thereof. This last mentioned collar is provided with a stud and the collar and stud enter a suitahle recess 7 in the wheel. This recess in the worm wheel has a central annular )ortion which extends entirely around the s aft so 'to receive the collar 5 in engagement with its inner surface and also an outer por tion in the form of a segmental slot into which the stud G extends-as shown in Fig. 4. Shoulders 8 and 9 form the ends of the segmental or outer portion of this slot or recess and are adapted to engage the stud so as to `move it and thereby the main operating shaft to which it is connected in either direction. ln Figs. 2. and 4 this gear is shown as itwould appear looking toward the right in Fig. 5,#in other words the recessed side of the worm wheel 3 is s own in both these figures. In Fig. 4 the gear wheel is shown in the position in which it would appear after being;V turned to the left-in the ligure-with the shoulder 9 in engagement with the stud until the shaft n had reached the top of the inclined portion of the loop. This would permit the door to swing to open position without further movement of the worm wheel. The swinging! of the door to open position would bring the stud to the position shown in dotted lines in Fig. 4, to which position it is free to turn independently of the gear wheel. The rotation of the gear wheel to the right from the position shown in Fig'. 4 will cause the shoulder 8 to engage the stud when it reachesy the point where such stud is shown in dotted lines in ligr. Ai. and the rotation being continued it will cause the main operatingr shaft with its stud to be turned to the position shown in Fig. at which point the door will be in closed positionHas shown in Fig. 1. y

It is desirable to provide suitable means for enabling the gear wheel to be turned comparatively slowly, by means of a lever, when much power is required, and rapidly by means of a hand-wheel when less power is required. To accomplish this l provide a worm 10, the threads of which mesh with the teeth of the worm wheel already described, such worm beingV mounted upon and in fixed relation to a rotatable shaft 11 which is in turn rotatably mounted in suitable bearings 1'2 and 123 upon the car frame. A hand-wheel 11 mounted, preferably at the upper end of this shaft, in lixed relation thereto, and a collar 115 is mounted intermediate such lmiitl\vheel and the bearing 13 so as to prevent the downward movement of the shaft,-the collar heineY in engagement with the bearine'. The upward movement of the shaft is prevented by the lower bearing which is in engagement with the worm. An arm 15 is rotatably mounted upon the worm shaft 11 between the collar 115 and the hand-wheel and is provided at its outer swinging end with a link portion 1G which pivotally mounted in such arm upon a horizontal pivot 1T. Upon the outer swinging' end of this link is mounted a main operating lever 18 pivotally secured to the link by means of a suitable pivot 19,4-the last, mentioned pivot extendingat right angles to the pivot 1.7 upon which the link 16 is mounted.

Jaws Q0 and :'21, preferably integral with the main operating lever and formingr a part thereof, extend outwardly laterally with relation to the link 16 on opposite sides of the )ivot 19, being adjacent to the outer periphery of the hand-wheel when the link and lever arm are raised to the position shown in Figs. 7 and 8. By this arrangement the movement of the lever arm in either direction from the po'sition shown in Fig. 7 will cause the jaw of such lever arm to grip the hand-wheel and turn it in a correslmmlinj; directioin--it being, of course. understood that the power must be applied at a point a sutlieient distance away from the pivot 1f) and toward the outer end of the main lever 18. The movement of the lever in either drection-without grippingr the wheel may be accomplished by grasping it near its pivotal point. By this arrangement when great apidity of movement of the worm gear and door operating mechanism is required, the hand-wheel may be rapidly revolved in the desired direction independently of the lever arm and when greater forceis required than can be well exerted upon the ha rid-wheel, the lever may be thrown into operative engagement with the handwheel and the mechanism operated by means of such lever, all l of which may be readily understood by those skilled in the art.

It is often desirable to use a dump car of this description for handling and dumping exceedingly heavy material, such for instance as stone or ore, and in such cases to prevent the car .from being overloaded, and restrict the size of the discharge opening in dumping such material. In order to accomplish this, movable supplementary side sections or side boards 22, extending longitudinally of the car throughout its entire length. are provided on each side of the car. These side sections or side boards are formed of several planks secured together by means of cleats or battens 23 extending transversely thereof, and are provided at their upper edge with suitable clips or hinge portions 24 having links or hooks 25 pivotally connected therewith and extending through elongated slots QG in the uprights of the side frames. The links or hooks may thus slide up and down in such slots to permit the movement et the supplementary side sections or side boards to the desired inclined operative position. ("lips or hinge portions 27 are mounted upon the side boards or supplementarv .sections near their lower edges and at suitable intervals and are provided with hooks as adapted to be inserted into any desired perforation 2f) in the upright of the side frame, so as to hold the supplementary side section or side board in position against the weight of the load. The side uprights or stakes are composed of angle members having a tiaiigc 3l securely riveted to the sides of the car and an inwardly extending flange $130. These stakes are connected to the transiemer beams by means of angle braces C52, one llange ot which is riveted to the in\vardl \Y extending flange 30 and the other to the transverse beam, as shown in Fig. 3. B v this` arrangement it will be seen that the dunming doors extend beneath these supplementary sections or side boards and that when such side boards are in their inclined position they serve to limit the capacity of the ear and to restrict the size of the discharge opening between their lower edges and the dumping doors.

I claim:

1..ln a dump car7 the combination of a dumping door and a supporting arm in engagement therewith movable into substantially vertical position to raise the door and to inclined position to release it, and means extending under the door to operate the supporting arm substantially as described.

2. In a dump car, the combination of a dmnpini;r door` a supporting arm in engagement therewith movable into substantially vertieal position to raise the door and to inelined position to release it, and means extending under the door for moving the lower end of such support-ing arm laterally of the car with relation to the point of its engagement with the dumping door, substantially as described. i

3. In a. dump car, the combination of a dumping door, supporting arm mechanism pivotally mounted thereon having a base port-ion movable to a point substantially beneath its pivotal point to raise the door alud from beneath such pivotal point to release the door and means extending underthe door to operate the arm, substantially as described.

4. In a dump car, the combination of a dumping door, a supporting arm pivotally mounted thereon having a base portion movable to a point substantially beneath its pivotal point to raise the door and from beneath such pivotal point to lower the door, means extending under the door to operate the arm and means for supporting such arm and thereby the door, substantially as described.

In a dump car, the combination of a dumping door, supporting arms pivotally mounted thereon each having a base portion movable to a point substantially beneath its pivotal point to raise the door and from beneath such pivotal point to lower the door, and means extending under the door for 'moving the base of each arm with relation to the pivotal point thereof backward and forward to raise and release the door, substantially as described.

6. In a dump car, the combination of a dumping door` supporting arms pivot-ally mounted thereon eaeh having a base portion movable to a point substantially beneath its pivotal point to raise 'the door and trom bevneath such pivotal point to lower the door, a shaft reeiproeatingly mounted and movable with and beneath the base of such arms to a point substantially beneath the pivotal points thereof to raise the door and support it in closed position and movable from heneatli such pivotal points to release the door, and means for operating such shaft5 substantially as described.

7. In a dump car, the combination of a dumping door, mechanism comprising a supporting arm pivotally mourned thereon having a base portion movable to a point substantially beneath itsl pivotal point to raise the door and from beneath such lpivotal point to lower the door. a shaft reciprocatingly mounted and movable with and beneath the base ot' such arm lo a point substantiall \Y beneath the pivotal point thereof to raise the door and support it in elosed position and movable i'rom beneath such pivotal point to release the door. means tor l supporting sueh shaft. and mean.` 'tor op elating such shaft and th.; r tht-'arm and t door` sub-tamiall-v as den-iiia-d.

t5. In a dump ear. the combination ot a dumping door, mechanism comprising a supporting arm pivotally mounted thereon having a base portion movable to a point substantially beneath its pivotal peint to raise the door and from beneath such pivotal point to lower the door, a shaft reciprocatingly mounted and movable with and beneath the base of such arm to a point substantially beneath the pivotal point thereof to raise the door and support it in closed position and movable from beneath such pivotal point to release the door, a main operating shaft provided with crank mechanism, lever mechanism connected at one end with the reciprocating shaft and atI the other end with such crank mechanism, and means for operating such main operating shaft and thereby the dumping doors, substantially as described.

9. In a dump car, the combination of a dumping door, mechanism comprising a supporting arm pivotally mounted thereon having a base portion movable to a point substantially beneath its pivotal point to raise the door and from beneath such pivotal point to lower the door, a shaft reciprocatingly mounted and movable with and be'- neath the base of such arm to a point substantially beneath the pivotal point thereof to raise the door and support it in closed position and movable. from beneath such pivotal point to release the door, supporting mechanism mounted in the frame-work of the car and provided with an inclined portion extendingr upward and outward laterally of the car upon which such reciprocating shaft is movably mounted, and means for operating such reciprocating shaft and thereby the supporting` arm and dumping door, substantially as described.

10. In a dump car` the ooi'nbination of a dumping door, mechanism comprising a supporting arm pivotally mount-ed thereon having a base portion movable to a point substantially beneath its pivotal point to raise the door and away from such pivotal point to lower the door, a shaft reciprocatingly mount-ed and movable with and beneath the base of such arm to a point substantially beneath the pivotal point thereof to raise the door and support it in closed position and movable away from such pivotal point to release the door, a main operating shaft provided witherank mechanism, lever mechanism connected at one end with the reciprocating shaft and at the other end with such crank mechanism, and means for operating such main operating shaft and thereby the dumping doors, substantially as described. y

1l. In a dump car. the :.-ombinam of a dumping' door, mechanism coniprisingl a supporting arm pivotally mounted thereon having a base portlon movable to a point substantially beneath its pivotal point to raise the door and away from such pivotal point to lower the door, a shaft reciprocatingly mounted and movable with and beneath the base of such arm to a point substantially beneath the pivotal point thereof to raise the door and support it in closed position and movable away from such pivotal point to release the door, a main operating shaft provided with crank mechanism, lever mechanism connected at one end with the reciprocating shaft and at the other end with such crank mechanism, and gear mechanism for operating such main operating shaft and thereby the dumping doors, substantially as described.

12. In a dump car, the combination of a dumping door, mechanism comprising a supporting arm pivotally mounted thereon having a base portion movable to a point substantially beneath its pivotal point to raise the door and from beneath such pivotal point to lower the door, a shaft reciprocatingly mounted and movable with and beneath the base of such arm to a point substantially beneath the pivotal point thereof to raise the door and support it in closed position and movable away from such pivotal point to release the door, a main operating shaftI provided with crank mechanism, lever mechanism connected at one end with the reciprocating shaft and at the other end with such crank mechanism, means for operating such main operating shaft and thereby the dumping doors, a stud mounted in fixed relation to the main operating shafty and extending outward late ally beyond the periphery thereof, a gear wheel rotatably mounted upon the shaft and provided with shoulders movable into and out of engagement with such stud, and means for operating such gear wheel and thereby the shaft and dumping door, substantially as described.

13. In a dump car, the combination of a dumping door, mechanism comprising a supporting arm pivotally mounted thereon having a base portion movable to a point substantially beneath its pivotal point to raise the door and away from such pivotal point to lower the door, a shaft reciprocatingly mounted and movable with and bcneath the base of such arm to a point substantially beneath the pivotal point thereof to raise the door and support it in closed position'and movable away from such pivotal point. to release the door, a main operating shaft provided with crank mechanism, lever mechanism connected at one end with the reciprocating shaft and at the other end with such crank mechanism, means for operatingsuch mainl operating` shaft and thereby the dumping doors, a stud iownted upon and in fixed relation to enit '.-i operating shaft, a gear wheel with shoulder portions movable n 'i sin? out. of

engagement with the stud, and means for operating such gear wheel and thereby the main operating shaft and dumping door, substantially as described.

14. ln a dump car, the combination of a dumping door, mechanism comprising a supporting arm pivotally mounted thereon having u, base portion movable to a point substantially beneath its pivotal point to raise the door and from beneath such pivotal point to lower the door, a shaft. reciprocatingly mounted and movable with and beneath the base of such arm to a point substantially beneath the pivotal point thereof to raise the door and support it in closed position and movable away from such pivotal point to close the door, a main operating .shaft provided with crank mecha` nism, lever mechanism connected at one end with the reciprocating shaft and at the other end with `such crank mechanism, means for operating such main operating shafty and thereby the dumping doors, a worm wheel mountedy upon such main operating shaft, aY

worm mounted in threaded engagement with such worm wheel, and means for operating such worm and thereby the worm wheel, main operating shaft and dumping doors, .substantially as described.

15. In a dump car, the combination of a dumping door, lever mechanism in operative engagement with such dumping door for raising it to closed position and releasing it. therefrom, a worm wheel operatively connected with suoli lever mechanism, a worm mounted in threaded engagement Willi such Worm wheel, lever' mechanism operatively connected with such worm, and means connected with the worm for operating it independently of auch lever mechanism, substantially as described.

16. In a dump car, door operating mechanism comprising a shaft, a hand wheel thereon, an arm pivoted on said shaft, an operating handle pivoted to said arm outside the periphery of the hand Wheel. and projectionsupon said operating handle adapted to contact with the periphery of the hand wheel when saidoperating handle is turned upon its pivot.

1T. In a dump car, door operating mecha-- nis'm comprising a shaft, a hand wheel thereon, an arm pivoted on said shalt, a link pivoted to said arm, an operating handle pivoted to said link, and projections` upon said operating handle adapted. to contact with the periphery of the hand wheel `when said optra-.ting handre is turned upon its pivot.

18. In a dump car, the combination of a supporting framework provided with end and side frames, supplementary side boards removably arranged in inclined position inside the side frames and extending longitudinally of the car, and dumping doors exttending beneath the lower edges of such l supplementary side 'boards and movable into l open and closed position forming substantially horizontal portions of the car bottom when in closed position and downwardly and outwardly inclined dumping portions when in open position, substantially-as described.

19. In a dump car, the combination of a supporting framework provided with end and side frames, dumping doors movable into substantially horizontal closed position to forni portions of the car floor and into inclined open position for dumping the load, and supplement-ary side boards extending longitudinally of the car movable into inclined position over the dumping doors with their lower edges inside'of the side frames to limit the capacity of the car and restrict the discharge opening between such supplementary side boards and dumping doors, sulistantiall; as described.

20. ln a dump car. the combination of a supporting frameworkA provided With end and side frames. humping doors movable into substantially horizontal closed position to form portions of the car floor and into iin-lined open position for dumping the load, supplementary .side boards extending longitudinally of the. far having their upper portions conpected with the side frames and their lower edges arranged inside of the side frames to limit the capacity of the car and the size of the discharge opening be- ,ftween such .side boards and dumping doors, and means for supporting the supplemenl tary side boards removably in inclined position` ,substantially as described.

Q1. ln u dump car, the combination of a ear-trame, a dumping door pivotally mounted in the car frame movable to open and closed positions, a shaft reciprocatingly mounted beneath and connected with such dumping door outside of its longitudinal center in both its open and closed positions, means for supporting the shaft and thereby the dumping door in open or closed position as desired, and means for operating such .shaft and thereby the dumping door, substantially as described.

ln a dump car, two parallel end walls spaced slightly apart, dumping floor secttions, and operating mechanism therefor, said mechanism extending between the.two end walls. y :3. ln a dump car. dumping doors, a fixed end wall, a supplemental end wall, mechalnisni beneath the tloor for operating the dumping doors` hand operated means at the top of the said end walls. and connections therefrom between the said end walls to the said door operating met'rhanisni.

24. ln a door operating mechanism for cars. the combination with a swinging door pmt-Mino a nart of the bottom of the rar )29 and having a link its free end, of a below the car body and havin a transverse portion with lwhich the opposite end of the link cooperates, subst-antlally as described.

25. In a door operating mechanism for cars, the combination with a pivoted door forming a part of the bottom of the car, of a link pivotally mounted on the free edge of said door7 a door supporting track suspended from the body of the car and below the bottom thereof for supporting the outer end of said link, said track being so constructed that when the door is closed the load will be transmitted through the link ivotally connected to oor supporting track upon the track in a direction approximately perpendicular to the portion of the track supporting the door, and means for operatingthe link, substantially as described.

26. In a car of the class described, a dump door, 'a bodily movable shaft.y a strut said shaft during one part of its movement acting directly upon said door andy innother Apart of 'its movement acting on said door through said strut.

SPENCER OTI S.

`Witnesses:

HARRY I. CROMER, ANNA L. SAVOIE. 

